Pre-populating Selected Values in Django Admin FilteredSelectmultiple Widget

Question

I want to be able to set some default selected users on the right side of a Django Admin FilteredSelectMultiple widget.

This is my model:

class UserAdminForm(forms.ModelForm):
    users = forms.ModelMultipleChoiceField(
        queryset=User.objects.all(),
        widget=FilteredSelectMultiple("Users",
                                      is_stacked=False))

    class Meta:
        model = User
        exclude = ()

Is there a way to do this with JavaScript so that I don't have to hand-select these defaults each time I create a new item?

Answer 1

You can specify the initial data by setting the initial=… parameter [Django-doc] with:

class UserAdminForm(forms.ModelForm):
    users = forms.ModelMultipleChoiceField(
        queryset=User.objects.all(),
        initial=User.objects.filter(username__in=['johnsmith', 'janedoe']),
        widget=FilteredSelectMultiple('Users', is_stacked=False)
    )

    class Meta:
        model = User
        fields = '__all__'

Here we thus set as initial selected users johnsmith and janedoe. You can of course pick other users.